A179966 Number of permutations of 1..2*n+8 with no adjacent elements within n in value.

40320, 479306, 6564318, 99133496, 1572313392, 25415753280

Offset

0,1

Links

Table of n, a(n) for n=0..5.

Crossrefs

Sequence in context: A179734 A061123 A029576 * A133068 A254081 A228911

Adjacent sequences: A179963 A179964 A179965 * A179967 A179968 A179969

Keyword

nonn,more

Author

R. H. Hardin, Aug 03 2010

Extensions

a(0)=40320 prepended by Seiichi Manyama, Dec 01 2018

Status

approved